I’ve only ever worn the Vaypor S and according to postal tracking the helix are ‘on the way’ so haven’t tried them on yet but hopefully here tomorrow so can keep you posted. They are already a light shoe from all accounts but I’ve never looked at weight, compared to other shoes or Vaypor S to Helix as it is all about the comfort and functionality of the shoe. The Helix have the one dial and the laces tensioning around your foot looks like a revolution in comfort for me and why I am getting a pair but I will let you know…